At Robot Restaurant 20, which opened last June, an usher robot greets diners by extending an arm and saying "Earth person hello. Welcome to the Robot Restaurant," the U.K. Daily Mail reports. Separate robot chefs cook the food. less

At Robot Restaurant 20, which opened last June, an usher robot greets diners by extending an arm and saying "Earth person hello. Welcome to the Robot Restaurant," the U.K. Daily Mail reports. Separate robot ... more

Photo: AFP, AFP/Getty Images

At Robot Restaurant 20, which opened last June, an usher robot... Photo-4051346.55341 - Beaumont Enterprise

Motoman demonstrated its RoboBar robotic bartender at the National Restaurant Association's annual trade show on May 23, 2006 in Chicago. The high-speed, dual-arm robot, which costs about $150,000, can serve beer, wine and mix drinks. less

Motoman demonstrated its RoboBar robotic bartender at the National Restaurant Association's annual trade show on May 23, 2006 in Chicago. The high-speed, dual-arm robot, which costs about $150,000, can serve ... more